Nampala Gold Mine

Nampala commenced production in 2017 and is expected to produce 41-46koz of gold in 2026.

Nampala is a small but profitable mine which generates steady cash flow for PDI Gold, supporting the Company’s growth ambitions. Exploration and optmisation work is ongoing with the aim of continuing to extend Nampala’s mine life.

Geology

Nampala is located within the Kadiana-Madinana Domain of the Birimian Supergroup in southern Mali, located within the broader Baoulé-Mossi Domain, a significant greenstone belt of West Africa renowned for its gold mineralisation.

The Birimian Supergroup is a significant component of the West African Craton, formed around 2.2 Ga to 2.0 Ga. It comprises a sequence of intensely deformed and metamorphosed volcanic and sedimentary rocks. The Birimian is typically divided into two parts: a lower volcanic group with basalts and andesites and an upper sedimentary group with greywackes, sandstones, and shales. These turbiditic sedimentary rocks are significant, as they often host significant gold mineralisation.

Mining

Mining at Nampala is conducted using a conventional open-pit method, involving contractor operated hydraulic excavators for loading and dump trucks for hauling. In areas of transitional lithology and laterites, drilling and blasting are employed, although most of the material is mined through free digging.

The mining sequence at Nampala is primarily influenced by the plant requirements and the tropical climate’s dry and wet seasons.

Processing

Since 2017, Nampala has been in continuous operation, processing primarily oxide material (saprolite). The 3Mtpa processing plant employs a design consisting of a scrubber, ball mill circuit, and cyclone classification. Gold recovery is achieved through a combination of gravity concentration followed by a carbon-in-leach (CIL) process and Zadra elution.

Since the initial implementation of the flowsheet, enhancements have been made to improve processing efficiency. A mineral sizer was added to manage large ore blocks, ensuring smoother material handling, and a cone crusher was integrated into the grinding circuit to address critical-size particles, optimising overall grinding performance.

Exploration

PDI Gold is completing an extensive drilling program at Nampala in 2026, comprising approximately 650 holes for more than 60,000 metres, including 40,000 metres of RC drilling, 8,000 metres of diamond drilling, and 12,000 metres of air‑core drilling.

Delivered over a 12‑month period, the program is designed to grow the resource base by targeting additional Indicated and Inferred resources while advancing both brownfields and greenfields opportunities across the broader mineralised system.

Drilling will also test the low‑strip, free‑oxide zones and the depth extension of fresh rock sulphide ore, supporting long‑term mine planning and future production potential.